FAQ: Frequently Asked Questions

We've compiled a list of questions we hear most often from our customers. This is an ever-expanding list and is updated frequently. If you have a question you'd like us to answer that you don't see in the list, please feel free to reach out to us by completing the contact form below.

What is Versimold?
Versimold is a silicone rubber compound putty that can be made into just about any rubber shape or part. By applying heat and "curing" it, you can create a tough, stretchy, and resilient material that will last a very long time.

Since Versimold is only cured with heat (as opposed to RTV silicone), uncured portions can be reused at a later time.

What can Versimold be used for?
Versimold is perfect for molding and shaping a variety of hard-to-find replacement rubber parts such as gaskets, grommets, o-rings, rubber feet, dampers, or cable insulators.

Since Versimold is very similar to polymer clay (albeit a bit softer), it can be used for sculpting or arts and crafts. Check out this amazing example to see what you can make with Versimold by clicking here.

How much Versimold do you get per order?
Versimold currently comes in 1/3rd lbs. (5.3 ounces or about 150 grams) puck.

Is Versimold a food-grade silicone?
Versimold has not been tested nor approved for food handling or human consumption. At this time, we cannot recommend using Versimold for food preparation.

What is "curing" and how does Versimold cure?
Curing is the process of turning a silicone rubber compound from a sticky/adhesive gel or liquid to a solid. Some silicone rubbers can cure at room temperature (RTV - room temperature vulcanization), but are typically softer and less resistant to oils, acids, and solvents.

Versimold is heat cured which means heat needs to be applied to the material in order for it to turn into a solid and remove its sticky properties.

Versimold only needs about 220F to 250F degrees F (99C to 121C) consistently for about 5-7 minutes.

What can I use to cure Versimold?
Versimold can be cured using a variety of methods that are available to most people.

  1. Heat gun (recommended) - Using a heat gun is the fastest method of curing Versimold since a heat gun is able to put out so much heat. The medium setting on most heat guns should suffice and will only require about 3-5 minutes to cure fully (depending on the thickness of your shape or part).
  2. Oven - An oven is a fast and easy way of curing your Versimold shape or part. Simply set the oven 220F (99C) for 5-7 minutes and your part should be fully cured. If using a convection, be sure to use the middle of the oven to get a more uniform cure.
  3. Boiling water - Surprising as it may sound, but Versimold will cure in boiling water (we've tried it!). This method works for smaller and less delicate parts or shapes as the agitating of the water bubbles may alter thinner shapes. "Boil" your shape or part for about 5-7 minutes which will give Versimold enough time to cure fully. Click here to see a video of us curing Versimold with boiling water.

How long does Versimold last and how should I store it?
Versimold will last about 1.5 years and still maintain its pliability. Versimold should be stored in a cool dark place so that it's not exposed to heat for a long period of time.

If Versimold is exposed to a moderate amount of heat for a long period of time (like an attic on a hot summer day), it will begin to mechanically cure (which releases the peroxide additive needed to fully cure) which will prevent the material from curing fully when exposed to optimal curing temperatures.

Some customers prefer to put their uncured portions of Versimold in a refrigerator. This is not exactly necessary, but will help in extending the shelf life of Versimold.

What colors are available?
Versimold only comes in black.

Can the colors be mixed to create new colors?
No - unfortunately Versimold doesn't play well with other colors. When one color of Versimold is mixed with another, you'll get a tie-dye effect rather than a new color.

Is Versimold toxic?
Versimold is perfectly safe to handle uncured and cured. Since we've not tested the product for use in food preparation, we can't recommend Versimold for use with food.

When Versimold is cured, it will exhibit a sweet and acidic odor which is simply the peroxide additive evaporating from the silicone rubber. This is safe and non-toxic, but may be strong or unpleasant at first.